HRMOS: A High-Resolution Multi-Object Spectrograph for the VLT

arXiv:2607.04916 · astro-ph.IM, astro-ph.GA, astro-ph.SR · Submitted 2026-07-06 · Read on arXiv

Laura Magrini, Thomas Bensby, Sofia Randich, Andrea Bianco, Oscar Gonzalez, Emma Fernandez-Alvar, Sergio G. Sousa, Letizia Caito, Marco Riva, Vardan Adibekyan, Anish M. Amarsi, Maria Teresa Belmonte, Maria Benito, Christian P. Clear, Camilla Danielski, Valentina D'Orazi, Riano Giribaldi, Camilla J. Hansen, Vanessa Hill, Robin D. Jeffries, Georges Kordopatis, Andrea Miglio, Dinko Milakovic, Germano Sacco, Jose Schiappacasse-Ulloa, Asa Skuladottir, Rodolfo Smiljanic, Maria Tsantaki, Almudena Arcones, Jose Maria Arroyo-Polonio, Martina Baratella, Beatriz Barbuy, John R. Barnes, Giuseppina Battaglia, Holger Baumgardt, Katia Biazzo, Manuela Bischetti, Angela Bragaglia, Tobias Buck, Sven Buder, Sema Caliskan, Gabriele Cescutti, Andrew Collier Cameron, Ryan Cooke, Sergio Cristallo, Francesco Damiani, Arnas Drazdauskas, Heitor Ernandes, Antonio Frasca, Mark Gieles, Valeria Grisoni, Moira Jardine, Evan N. Kirby, Jonas Klevas, Andreas Korn, Ioanna Koutsouridou, Cis Lagae, Nadege Lagarde, Romain Lucchesi, Francesca Lucertini, Luca Malavolta, Fabiola Marino, Tadafumi Matsuno, Thibault Merle, Sapna Mishra, Marta Molero, Mario Montalto, Michele Moresco, Alessio Mucciarelli, Domenico Nardiello, Valerio Nascimbeni, Brunella Nisini, Joana Oliveira, Elenia Pacetti, Marco Palla, Marco Pignatari, Danae Polychroni, Federico Rizzuti, Donatella Romano, Stefania Salvadori, Luca Sbordone, Emanuele Spitoni, Matthew R. Standing, Grazina Tautvaivsiene, Yuan-Sen Ting, Andrea Travascio, Diego Turrini, Sophie Van Eck, Kim Venn, Diego Vescovi, C. Clare Worley, Nick Wright, Robert Yates, Alice Zocchi, Laura Affer, Carlos Allende, Paul Barklem, Michele Bellazzini, Serena Benatti, Leda Berni, Francesco Borsa, Maurizio Busso, Tiago Campante, Roberta Carini, Brad Carter, Giada Casali, Mario Damasso, Elisa Delgado Mena, Ignacio Del Moral Castro, Silvano Desidera, Maria Pia Di Mauro, Ana Escorza, Sergio Fonte, Elena Franciosini, Xiaoting Fu, Paolo Giacobbe, Terese Thidemann Hansen, Henrik Hartman, Keith Hawkins, Neda Heidari, Krzysztof Helminiak, H. Jens Hoeijmakers, Stavro Lambrov Ivanovski, Pascale Jablonka, Chiaki Kobayashi, Arunas Kucinskas, Carmela Lardo, Sebastiano Ledda, Alesandra Lehtmets, Karin Lind, João J. G. Lima, Sara Lucatello, Fatemeh Zahra Majidi, Sarah Martell, Anna McLeod, Sergio Molinari, Stephanie Monty, Benjamin Montet, Michael T. Murphy, Henryka Netzel-Iłkiewicz, Belinda Nicholson, Patrick Palmeri, Luca Pasquini, Lorenzo Pino, Romolo Politi, Francesca Primas, Pascal Quinet, Monica Rainer, Heleri Ramler, Yassin Rany Khalil, Martina Rossi, Eugenio Schisano, Federico Sestito, Paolo Simonetti, Arianna Vasini, Silvia Vicente, Carlos Viscasillas Vazquez, Manuela Zocchi, Michele Zusi, Andrea Baruffolo, Martin Black, Anna Brucalassi, Simone D'Auria, Vincenzo De Caprio, Michele Frangiamore, Enrico Giro, Robert J. Harris, Alen Khanbekyan, Enrique Joven, Tom Louth, Matteo Munari, Graham J. Murray, Luis Fernando Rodriguez Ramos, Bernardo Salasnich, William Taylor, Andrea Tozzi, Steven Watson

astro-ph.IM, astro-ph.GA, astro-ph.SR

Submitted: 2026-07-06

Comments: Second version of the White Paper for the proposed HRMOS instrument for the ESO Very Large Telescope (VLT)

Code: https://github.com/j-faria/iCCF

Project page: https://physics.mcmaster.ca/~harris/mwgc.dat

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Abundance — 221× in this paper · explained in 1 episode
• Metallicity — 90× in this paper · explained in 3 episodes
• Calibration — 36× in this paper · explained in 7 episodes
• Core — 29× in this paper · explained in 2 episodes
• Accuracy — 24× in this paper · explained in 1 episode
• Benchmark — 22× in this paper · explained in 2 episodes
• Trace — 19× in this paper · explained in 2 episodes
• Neutron-capture elements — 17× in this paper · explained in 2 episodes
• AGN — 14× in this paper · explained in 1 episode
• Velocity Dispersion — 8× in this paper · explained in 2 episodes
• Adam — 7× in this paper · explained in 2 episodes
• High-Resolution Multi-Object Spectrograph — 7× in this paper
• Extremely Large Telescope — 6× in this paper
• Very Large Telescope — 6× in this paper
• Anisotropy — 5× in this paper · explained in 3 episodes
• Fidelity — 5× in this paper · explained in 2 episodes
• Angular Momentum Loss — 4× in this paper · explained in 1 episode
• Anti-correlation — 4× in this paper · explained in 3 episodes
• European Southern Observatory — 4× in this paper
• Microlensing — 4× in this paper · explained in 2 episodes
• Consistency — 3× in this paper · explained in 3 episodes
• European Space Agency — 3× in this paper
• Hubble Tension — 3× in this paper · explained in 9 episodes
• Large Magellanic Cloud — 3× in this paper
• National Institute of Standards and Technology — 3× in this paper
• Degeneracy — 2× in this paper · explained in 3 episodes
• Diffusion Processes — 2× in this paper · explained in 2 episodes
• Exposure Time Calculator — 2× in this paper
• Fourier Transform Spectroscopy — 2× in this paper
• Global Architecture of Planetary Systems — 2× in this paper
• Homogeneity — 2× in this paper · explained in 2 episodes
• Milky Way Mapper — 2× in this paper
• Population Synthesis — 2× in this paper · explained in 2 episodes
• Robustness — 2× in this paper · explained in 5 episodes
• Small Magellanic Cloud — 2× in this paper
• Society of Photo-Optical Instrumentation Engineers — 2× in this paper
• alpha — 2× in this paper · explained in 1 episode
• AGN Feedback — 1× in this paper · explained in 1 episode
• Ab Initio — 1× in this paper · explained in 1 episode
• Accretion Flows — 1× in this paper · explained in 1 episode
• Accretion Physics — 1× in this paper · explained in 2 episodes
• Accretion Shock — 1× in this paper · explained in 1 episode
• Active Galactic Nuclei (AGN) — 1× in this paper · explained in 1 episode
• Active Regions — 1× in this paper · explained in 1 episode
• Adaptation — 1× in this paper · explained in 1 episode
• Alignment — 1× in this paper · explained in 1 episode
• Baryonic Feedback — 1× in this paper · explained in 3 episodes
• Bayesian Framework — 1× in this paper · explained in 3 episodes
• Decode — 1× in this paper · explained in 2 episodes
• Decoupling — 1× in this paper · explained in 2 episodes
• Diagnostic Tools — 1× in this paper · explained in 2 episodes
• Fine-Tuning — 1× in this paper · explained in 5 episodes
• Hybrid Approach — 1× in this paper · explained in 4 episodes
• Institute of Astrophysics and Space Sciences — 1× in this paper
• Italian Ministry of University and Research — 1× in this paper
• Iterative Refinement — 1× in this paper · explained in 3 episodes
• Mass Segregation — 1× in this paper · explained in 2 episodes
• Modular Architecture — 1× in this paper · explained in 4 episodes
• Multi-messenger Astronomy — 1× in this paper · explained in 3 episodes
• Signal-to-noise ratio (SNR) — 1× in this paper · explained in 2 episodes
• Sparsity — 1× in this paper · explained in 4 episodes
• Stellar Feedback — 1× in this paper · explained in 2 episodes

Sources

• Magnesium Isotopic Detection in Cool Stars: Tracing Nucleosynthetic Signatures from MgH Features
• The chemical make-up of the Sun: A 2020 vision
• Detector System Challenges of the Wide-field Spectroscopic Survey Telescope (WST)
• Optical and Near-infrared View of Planet-forming Disks and Protoplanets
• Stellar Population Astrophysics (SPA) with the TNG 23 IR elemental abundances of 114 giant stars in 41 Open Clusters
• Gaia: Ten Years of Surveying the Milky Way and Beyond
• The chemodynamical memory of a major merger in a NIHAO-UHD Milky Way analogue -- I. A golden thread through time and space
• Ag I model atom and the 3D non-LTE solar silver abundance
• Understanding the Planetary Formation and Evolution in Star Clusters(UPiC)-II: Catalog of planets/candidates in Open Clusters and Moving Groups
• M3DIS -- A grid of 3D radiation-hydrodynamics stellar atmosphere models for stellar surveys. II. Carbon-enhanced metal-poor stars
• Modernizing IRAF to Support Gemini Data Reduction
• Observational Signatures and Constraints on the Intermediate Neutron-Capture Process. The Case of the CEMP star TYC 6044-714-1 (RAVE J094921.8-161722)
• Chemical evolution imprints in the rare isotopes of nearby M dwarfs
• A New Catalog of Globular Clusters in the Milky Way
• The wide-field, multiplexed, spectroscopic facility WEAVE: Survey design, overview, and simulated implementation
• HRMOS White Paper: Science Motivation
• Chemical decoding of kinematic substructures in the Galactic halo
• Classical Cepheids in the Galactic thin disk I. Abundance gradients via non-local thermodynamic equilibrium spectral analysis
• The Role of Disk Winds in the Evolution and Dispersal of Protoplanetary Disks
• Second generation planets

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